diff options
| author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-07-26 09:51:21 -0300 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2019-07-31 13:30:06 -0600 |
| commit | 76b5a6e8427159ad2b3b8764ebd6f3f5213be97e (patch) | |
| tree | b8b6068bd39191201a62fa3f337549efdd5a0b9f /Documentation/auxdisplay | |
| parent | 1ec779b9fabcdbfaa06971b5c2a4d9a6e4b45b3a (diff) | |
docs: admin-guide: add auxdisplay files to it after conversion to ReST
Those two files describe userspace-faced information. While part of
it might fit on uAPI, it sounds to me that the admin guide is the
best place for them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/auxdisplay')
| -rw-r--r-- | Documentation/auxdisplay/cfag12864b | 105 | ||||
| -rw-r--r-- | Documentation/auxdisplay/ks0108 | 55 |
2 files changed, 0 insertions, 160 deletions
diff --git a/Documentation/auxdisplay/cfag12864b b/Documentation/auxdisplay/cfag12864b deleted file mode 100644 index 12fd51b8de75..000000000000 --- a/Documentation/auxdisplay/cfag12864b +++ /dev/null @@ -1,105 +0,0 @@ - =================================== - cfag12864b LCD Driver Documentation - =================================== - -License: GPLv2 -Author & Maintainer: Miguel Ojeda Sandonis -Date: 2006-10-27 - - - --------- -0. INDEX --------- - - 1. DRIVER INFORMATION - 2. DEVICE INFORMATION - 3. WIRING - 4. USERSPACE PROGRAMMING - - ---------------------- -1. DRIVER INFORMATION ---------------------- - -This driver supports a cfag12864b LCD. - - ---------------------- -2. DEVICE INFORMATION ---------------------- - -Manufacturer: Crystalfontz -Device Name: Crystalfontz 12864b LCD Series -Device Code: cfag12864b -Webpage: http://www.crystalfontz.com -Device Webpage: http://www.crystalfontz.com/products/12864b/ -Type: LCD (Liquid Crystal Display) -Width: 128 -Height: 64 -Colors: 2 (B/N) -Controller: ks0108 -Controllers: 2 -Pages: 8 each controller -Addresses: 64 each page -Data size: 1 byte each address -Memory size: 2 * 8 * 64 * 1 = 1024 bytes = 1 Kbyte - - ---------- -3. WIRING ---------- - -The cfag12864b LCD Series don't have official wiring. - -The common wiring is done to the parallel port as shown: - -Parallel Port cfag12864b - - Name Pin# Pin# Name - -Strobe ( 1)------------------------------(17) Enable -Data 0 ( 2)------------------------------( 4) Data 0 -Data 1 ( 3)------------------------------( 5) Data 1 -Data 2 ( 4)------------------------------( 6) Data 2 -Data 3 ( 5)------------------------------( 7) Data 3 -Data 4 ( 6)------------------------------( 8) Data 4 -Data 5 ( 7)------------------------------( 9) Data 5 -Data 6 ( 8)------------------------------(10) Data 6 -Data 7 ( 9)------------------------------(11) Data 7 - (10) [+5v]---( 1) Vdd - (11) [GND]---( 2) Ground - (12) [+5v]---(14) Reset - (13) [GND]---(15) Read / Write - Line (14)------------------------------(13) Controller Select 1 - (15) - Init (16)------------------------------(12) Controller Select 2 -Select (17)------------------------------(16) Data / Instruction -Ground (18)---[GND] [+5v]---(19) LED + -Ground (19)---[GND] -Ground (20)---[GND] E A Values: -Ground (21)---[GND] [GND]---[P1]---(18) Vee - R = Resistor = 22 ohm -Ground (22)---[GND] | - P1 = Preset = 10 Kohm -Ground (23)---[GND] ---- S ------( 3) V0 - P2 = Preset = 1 Kohm -Ground (24)---[GND] | | -Ground (25)---[GND] [GND]---[P2]---[R]---(20) LED - - - ------------------------- -4. USERSPACE PROGRAMMING ------------------------- - -The cfag12864bfb describes a framebuffer device (/dev/fbX). - -It has a size of 1024 bytes = 1 Kbyte. -Each bit represents one pixel. If the bit is high, the pixel will -turn on. If the pixel is low, the pixel will turn off. - -You can use the framebuffer as a file: fopen, fwrite, fclose... -Although the LCD won't get updated until the next refresh time arrives. - -Also, you can mmap the framebuffer: open & mmap, munmap & close... -which is the best option for most uses. - -Check samples/auxdisplay/cfag12864b-example.c -for a real working userspace complete program with usage examples. diff --git a/Documentation/auxdisplay/ks0108 b/Documentation/auxdisplay/ks0108 deleted file mode 100644 index 8ddda0c8ceef..000000000000 --- a/Documentation/auxdisplay/ks0108 +++ /dev/null @@ -1,55 +0,0 @@ - ========================================== - ks0108 LCD Controller Driver Documentation - ========================================== - -License: GPLv2 -Author & Maintainer: Miguel Ojeda Sandonis -Date: 2006-10-27 - - - --------- -0. INDEX --------- - - 1. DRIVER INFORMATION - 2. DEVICE INFORMATION - 3. WIRING - - ---------------------- -1. DRIVER INFORMATION ---------------------- - -This driver supports the ks0108 LCD controller. - - ---------------------- -2. DEVICE INFORMATION ---------------------- - -Manufacturer: Samsung -Device Name: KS0108 LCD Controller -Device Code: ks0108 -Webpage: - -Device Webpage: - -Type: LCD Controller (Liquid Crystal Display Controller) -Width: 64 -Height: 64 -Colors: 2 (B/N) -Pages: 8 -Addresses: 64 each page -Data size: 1 byte each address -Memory size: 8 * 64 * 1 = 512 bytes - - ---------- -3. WIRING ---------- - -The driver supports data parallel port wiring. - -If you aren't building LCD related hardware, you should check -your LCD specific wiring information in the same folder. - -For example, check Documentation/auxdisplay/cfag12864b. |